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kozerog [31]
2 years ago
5

Devin has a change jar that contain only half dollars and pennies. He has 93 coins which add up to a total of $23.96. How many o

f each type of coin does he have?​
Mathematics
2 answers:
Marianna [84]2 years ago
8 0

Answer:

47 Half Coins

46 Pennies

Serga [27]2 years ago
6 0
Let h = half dollars (50¢ or .5)
let p = pennies (1¢ or .01)
0.5h + 0.01p = 23.96
h + p = 93
multiply top equation by (-100) to make coefficients of p opposite
-50h - p = -2396
h + p = 93
combine
-49h = -2303
simplify
h = 46
find p
46 + p = 93
subtract & simplify
p = 47

Devin has 47 pennies and 46 half dollars.
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What would 672,831 be rounded to the nearest hundred
maks197457 [2]

Answer:

672,800

Step-by-step explanation:

672,800 672800

8 0
3 years ago
Together, Dante and Mia have a total of 350 pennies in their piggy banks. After Dante lost ½ of his pennies and Mia lost ⅓ of he
natta225 [31]

Answer:

Altogether they lost 150 pennies.

Step-by-step explanation:

X = Dante's pennies

Y = Mia's pennies

X + Y = 350                                       1/2 X = 2/3 Y

                                                                X = 4/3 Y

4/3 Y + Y = 350

7/3 Y = 350

Y = 350 * 3/7

Y = 50 * 3

Y = 150

X + 150 = 350

X = 200

                                                     1/2 * 200 = 2/3 * 150

                                                       100 .      =   100

1/2 * 200 = 100 -> Dante lost 100 pennies

1/3 * 150 = 50 -> Mia lost 50 pennies

Altogether they lost 150 pennies.

3 0
3 years ago
Read 2 more answers
The mold for a cone has a diameter of 4 inches in 6 inches tall what is the volume of the cone mold to the nearest 10th
anygoal [31]

Hey there!

The formula for the volume of a cone is V=\pi r^{2} \frac{h}{3}.

In this cone, we have the given information:

  • Its diameter is 4 inches
  • Its height is 6 inches

The information we need for this formula is the radius and height.

We already have the height, but not the radius.

Fortunately, we can easily get it by dividing the diameter by 2.

4 \div 2 = 2

So, the radius is 2.

Let 3.14 be \pi.

Plug in each value into the equation. V = 3.14 \times 2^{2} \times \frac{6}{3}

Simplify the exponent and fraction.

V = 3.14 \times 4 \times 2

Multiply the three numbers together.

V = 25.12

But wait! We have to round this to the nearest tenth.

When rounding, we look at the place value one less than the one we are rounding to. Since we are rounding to the nearest tenth, we look at the hundredths place, which is the digit 2.

Since 2 is less than 5, we round down to 25.1.

This is the volume of a cube, and it is measured in inches, so the unit we will use is in^{3}.

So, your <u>final answer</u> is 25.1 in^{3}!

Hope this helps!

8 0
2 years ago
A superhero recently asked his nemesis how many cats she has. She answered with a​ riddle: ​"Five dash sixths of my cats plus tw
pochemuha
1 1/6
I think
Or 2 5/6
3 0
3 years ago
Mark is flying a kite and realizes that 300 feet of string is out. Mark anchored the kite to the ground. The angle of the string
Nadya [2.5K]

Answer:

The kite is 202.7 feet above the ground

Step-by-step explanation:

The scenario is depictedd in the picture attached

we have to find the height.

Trigonometric ratios will be used to find the height.

So,

sin\ (42.5) = \frac{h}{300}\\ 0.6756=\frac{h}{300}\\0.6756*300=h\\202.68 = h

The height is 202.68 feet

Rounding off to the nearest tenth

202.7 feet

Therefore, the kite is 202.7 feet above the ground ..

3 0
3 years ago
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